T.R. Knight is blaming his hectic schedule as the reason for his split with his boyfriend of almost two years, Mark Cornelsen.

“It just came to a natural end, no hard feelings,” explains a close friend of the former Grey’s Anatomy star, whose focus has been on his role in the musical Parade at the Mark Taper Forum in LA.

“They still care about each other very much.”

And though T.R., 36, asked his ex, who is 16 years younger, to move out of the apartment they shared, he said it doesn’t mean he has given up hope for a family someday.

“I want a baby,” he told Ellen DeGeneres around the time of his breakup. His wish to adopt a child is genuine. “When the time is right, it will happen,” says the pal, adding that for right now, “his focus is on the show.”